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Finding the Fourth Proportional to 303,472.30, 455,208.45 and 78,814.30

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Solution

The fourth proportional to 303,472.30, 455,208.45 and 78,814.30 is: 118,221.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,472.30 : 455,208.45 = 78,814.30 : x
  2. Step 2: Convert to fraction form
    303,472.30/455,208.45 = 78,814.30/x
  3. Step 3: Cross multiply
    303,472.30x = 455,208.45 × 78,814.30
  4. Step 4: Simplify right side
    303,472.30x = 35,876,935,340.84
  5. Step 5: Solve for x
    x = 35,876,935,340.84/303,472.30
  6. Step 6: Final answer
    x = 118,221.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.